finger

Old English fingor, from Proto-Germanic *fingraz (cf. Old Saxon fingar, Old Frisian finger, Old Norse fingr, Dutch vinger, German Finger, Gothic figgrs), with no cognates outside Germanic; perhaps connected with PIE *penkwe-, the root meaning "five."

As a unit of measure (Middle English) it represents the breadth of a finger, about three-quarters of an inch. They generally are numbered from the thumb, and named index finger, fool's finger, leech- or physic-finger, and ear-finger.

v.

early 15c., "to touch or point to with the finger" (but cf. fingering from late 14c.), from finger (n.). Sense of "play upon a musical instrument" is from 1510s. The meaning "identify a criminal" is underworld slang first recorded 1930. Related: Fingered; fingering.

The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.Copyright (C) 2007 by HarperCollins Publishers.Cite This Source

Idioms and Phrases with snap one's fingers at

snap one's fingers at

Treat with contempt, scorn, disregard, as in Peter just snapped his fingers at the speed limit and drove as fast he liked, or Joanne snapped her fingers at the rumor about their bankruptcy. This expression alludes to the gesture of striking one's finger against one's thumb, thereby making a sharp noise.
[ Early 1800s
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